Vehicle grille insert



FIG. 1 is a front view of a vehicle grille insert showing the new design;

FIG. 2 is a perspective view, thereof;

FIG. 3 is a side view, thereof; and,

FIG. 4 is a top plan view, thereof.

In the figures, broken lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a vehicle grille insert, as shown and described. 